Parent-child relationships establish the hierarchy of classes within a model. View and create parent-child relationships when you create a model on the
Model
tab.
Create a parent-child relationship to specify that one class is the child class of a different class in the same model. For example, you create a custom model that contains the DataStructure and DataField classes. You want to specify that the DataField class is a child class of the DataStructure class. To establish a parent-child relationship between the classes, first create the DataStructure class. Then select the DataStructure class and create the DataField class. The DataField class becomes the child, or subclass, of the DataStructure class.